Recently I've had 2 new style Chevy Suburbans ( VIN 3 LC9 engines ) that I cleaned the throttle bodies on. In both cases the cleaning lowered the throttle angle at idle from 11 to 5 % and in both cases the vehicles developed idle issues after the cleaning. The idle was fine until the throttle was tipped in, then would not idle below 1200 even though desired was 600 rpm. In both cases a day of driving the vehicle returned the idle to normal. THere is no relearn procedure or function I've found in the Verus ( 10.2 ). I could control and bring the idle down with the RPM control function, but this did not cure problem, niether did fuel trim reset. Maybe there is a function in 10.4 ? Or some one out there Knows of a relearn procedure other than a battery disconnect ?
Throttle relearn on new style GM trucks
Collapse
X
-
Recently I've had 2 new style Chevy Suburbans ( VIN 3 LC9 engines ) that I cleaned the throttle bodies on. In both cases the cleaning lowered the throttle angle at idle from 11 to 5 % and in both cases the vehicles developed idle issues after the cleaning. The idle was fine until the throttle was tipped in, then would not idle below 1200 even though desired was 600 rpm. In both cases a day of driving the vehicle returned the idle to normal. THere is no relearn procedure or function I've found in the Verus ( 10.2 ). I could control and bring the idle down with the RPM control function, but this did not cure problem, niether did fuel trim reset. Maybe there is a function in 10.4 ? Or some one out there Knows of a relearn procedure other than a battery disconnect ?
Joe"You don't build a reputation on what you're going to do"
Henry FordComment
-
I dont know which do and dont have it. Sometimes its in output controls, sometimes its under module setup. Depends on the vehicle I guess. The ones that dont have the idle reset, dont have it in the Tech2 either.One I know offhand is 04 Tahoe 5.3. Just had one last week, had to disconnect the battery. Also, 07? Colorado w/3.5 didnt have reset either. Those I recall off the top of my head. Neither Verus or Tech2 had the function.Jim Testa
Senior Technician
JD Automotive & Truck Inc
Dover, NJComment
Comment